This is a lyrical masterpiece of devotion of Vishnu by Sri Yamunacharya, the predecessor of Sri Ramanuja. Sanskrit text, with English transliteration, translation and notes.
We must have friendship for all; we must be merciful toward those that are in misery; when people are happy, we ought to be happy; and to the wicked we must be indifferent. These attitudes will make the mind peaceful.
-Swami Vivekananda